WEEK 6 - EXERCISE SIX (6)
WEEK 5 - EXERCISE 5
INTEGRATED SCIENCE JH3
WEEK 4 - EXERCISE FOUR (4)
WEEK 3 - EXERCISE THREE (3)
WEEK 2 - EXERCISE TWO (2)
WEEK 1 - EXERCISE ONE (1)
SCIENCE FORM3
- a) . name the particle (s) found in the:
i). nucleus of atom.
ii) Shell of the atom.
b). i) Give two reasons why clotting of blood is important
ii) State two modes of transmission of influenza disease.
c). A cube of sugar has a mass of 30 g and occupies an area of 4 cm²with a height of 2cm. calculate the density of the sugar.
d) . i) What is pest?
ii) Give one example each of the following methods of controlling pests on a crop farm.
ά) cultural method,
β) biological method
.
- a) Mention the class of food that when digested would produce
- amino acid.
- fatty acids and glycerol
- glucose
b) State one precaution each that should be taken when the following laboratory activities are carried out.
i) picking hot iron nail from fire.
ii) lighting a gas stove.
iii) diluting concentrated acid with distilled water.
vi) smelling a gas
c) Distinguish between the following pairs of farming systems.
i) organic farming and crop rotation
ii) mixed farming and mixed cropping
d) Convert the following physical Quantities to the stated units
i) 200 cm to metres
ii) 4,000 g to kilograms
- (a) Explain briefly how fish is adapted to living in salt water.
(b) i) Name two weather measuring instruments
ii) State the aspects of the weather that each of the instruments named in
(b) (i) measures.
(iii) Sate the SI unit of resistance.
c) List four signs and symptoms of low blood pressure.
d) (i) give two reasons why melting of ice is considered as a physical change.
(ii) What is a solvent?
- (a) i) explain briefly what is meant by the term science.
ii) give two reasons why integrated science should be studied.
(b) i) what is staking?
ii) State two precautions to be taken when selecting staking materials.
(c) (i) state two ways in which photosynthesis is important to plants and animals
(ii) State one chemical method of controlling mosquitoes.
(d) An atom of an element has anatomic number of 10 and a mass of 20. Determine the number of.
i) protons
ii) electrons
iii) neutrons
- a) ) i) complete the following word equations
ά) Metal + dilute acid → salt + …………………………….
β) Sodium + water → ………………………………… +………………………
ii) State two physical properties of non-metals.
b) ) i) Mention two ways of maintaining the carbon-cycle.
ii) Give two examples of a unicellular organism.
c) i) What is soil structure?
ii) State two ways in which soil structure is important in plant growth.
d) Draw the circuit symbol for a:
(i) variable resistor.
(ii) switch